/*
Copyright 2010,2011 Matt Van Der Westhuizen

This file is part of CGLL.

CGLL is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

CGLL is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License
along with CGLL.  If not, see <http://www.gnu.org/licenses/>.
*/

package org.chaoticengine.cgll.entity.component.render;

import org.chaoticengine.cgll.entity.component.RenderComponent;
import org.newdawn.slick.Color;
import org.newdawn.slick.GameContainer;
import org.newdawn.slick.Graphics;
import org.newdawn.slick.state.StateBasedGame;
import org.simpleframework.xml.Element;

/**
 * A simple rendering component for displaying the bounding rectangle of the
 * owner entity. Will be useful for debugging clipping and hit detection
 * problems.
 *
 * @author Matt v.d. Westhuizen
 */
public class BoundsRenderComponent extends RenderComponent {
    private Color col = Color.red;
    private boolean rotate = true;
    private boolean filled = false;
    private float lineWidth = 1.0f;

    public BoundsRenderComponent() {
        super();
    }

    @Element(name="color", required=false)
    public void setColor(Color c) {
        this.col = c;
    }

    @Element(name="color", required=false)
    public Color getColor() {
        return(this.col);
    }

    @Element(name="rotate", required=false)
    public boolean isRotate() {
        return rotate;
    }

    @Element(name="rotate", required=false)
    public void setRotate(boolean rotate) {
        this.rotate = rotate;
    }

    @Element(name="filled", required=false)
    public boolean isFilled() {
        return filled;
    }

    @Element(name="filled", required=false)
    public void setFilled(boolean filled) {
        this.filled = filled;
    }

    public float getLineWidth() {
        return lineWidth;
    }

    public void setLineWidth(float lineWidth) {
        this.lineWidth = lineWidth;
    }

    @Override
    public void onSetOwner() {
        // Nothing needs to be done here
    }

    @Override
    public void render(GameContainer gc, StateBasedGame sb, Graphics gr) {
        // Translation & rotation
        gr.translate(owner.getPosition().x, owner.getPosition().y);
        if (rotate) {
            gr.rotate(0.0f, 0.0f, owner.getRotation());
        }
        gr.translate(-owner.getBounds().getCenterX(), -owner.getBounds().getCenterY());

        // Store color & line width
        float width = gr.getLineWidth();
        Color oldColor = gr.getColor();

        // Rendering
        gr.setLineWidth(width);
        gr.setColor(col);

        if (!filled) {
            gr.draw(owner.getBounds());
        } else {
            gr.fill(owner.getBounds());
        }

        // Restore color & line width
        gr.setLineWidth(width);
        gr.setColor(oldColor);

        // Undo translation & rotation
        gr.translate(owner.getBounds().getCenterX(), owner.getBounds().getCenterY());
        if (rotate) {
            gr.rotate(0.0f, 0.0f, -owner.getRotation());
        }
        gr.translate(-owner.getPosition().x, -owner.getPosition().y);
    }
}
